Fix warnings and improve compatibility in plugin

[Kataglyphis]

explicit EncodableValue in Windows

NOTE:
Right now pipline is not running through because I changed the version number
Anything I shoukld do about it ?

New clang-cl versions are strict about return types.
This fix creates support for modern clang-cl compilation (explicit EncodableValue & cleanups)
MSVC has lazier rules about that.

PR Body

Description
This PR addresses compilation errors when building the Windows plugin using clang-cl (LLVM).

While MSVC is permissive regarding implicit template conversions, clang-cl is stricter and fails to compile the Success call when passing a std::map directly. This change makes the type conversion explicit, which satisfies Clang while remaining fully compatible with MSVC.

Changes

1. Explicit Type Conversion: Wrapped requestResults in flutter::EncodableValue(...) before passing it to result->Success().

• Error fixed: no matching member function for call to 'Success'

2. Warning Cleanup: Removed an unused [this] capture in the geolocator lambda.

• Warning fixed: [clang] lambda capture 'this' is not used [-Wunused-lambda-capture]

Testing

• Compiles successfully with clang-cl (LLVM).
• Compiles successfully with MSVC (standard Visual Studio compiler).
• Verified requestPermissions still returns correct results on Windows.

Related Issue

• Fixes build issues for users utilizing clang-cl for Windows builds (e.g. for faster builds).

Pre-launch Checklist

• I made sure the project builds.
  You can have a look here where my project
  builds correctly with the fix.
• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy, or this PR is does not need version changes.
• I updated CHANGELOG.md to add a description of the change.
• I updated/added relevant documentation (doc comments with ///).
• I rebased onto main.
• I added new tests to check the change I am making, or this PR does not need tests.
• I made sure all existing and new tests are passing.
• I ran dart format . and committed any changes.
• I ran flutter analyze and fixed any errors.

[Copilot]

Pull request overview

This PR improves compatibility with clang-cl (LLVM) compiler for the Windows permission handler plugin by making implicit type conversions explicit and cleaning up compiler warnings. The changes ensure the plugin builds successfully with both clang-cl and MSVC.

Changes:

• Made EncodableValue type conversion explicit when passing EncodableMap to result->Success()
• Removed unused [this] lambda capture that caused warnings in clang-cl
• Updated version numbers for both permission_handler_windows (0.2.1 → 0.2.2) and permission_handler (12.0.1 → 12.0.2)

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
permission_handler_windows/windows/permission_handler_windows_plugin.cpp	Explicit EncodableValue conversion and removed unused lambda capture
permission_handler_windows/pubspec.yaml	Version bump to 0.2.2
permission_handler_windows/CHANGELOG.md	Added changelog entry for clang-cl support
permission_handler/pubspec.yaml	Version bump to 12.0.2 and updated Windows dependency
permission_handler/CHANGELOG.md	Added changelog entry for Windows compatibility update

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[Copilot]

Missing closing backtick after result->Success(). The line should end with a closing backtick to properly format the inline code.

Suggested change

	* Explicit Type Conversion: Wrapped `requestResults` in `flutter::EncodableValue(...)` before passing it to `result->Success()
	* Explicit Type Conversion: Wrapped `requestResults` in `flutter::EncodableValue(...)` before passing it to `result->Success()`